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MHT CET Physics question

PhysicsAlternating CurrentMHT CET

If a transformer of an audio amplifier has output impedance 8000 and the speaker has input impedance of 8, the primary and secondary turns of this transformer connected between the output of the amplifier and to loudspeaker should have the ratio

Answer: (D)

Solution

Impedance transforms as the square of the turns ratio, so ,

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Question ID VK-082209